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Cisco Security Advisory: Cisco IOS Software Session Initiation Protocol Denial of Service Vulnerability
From: Cisco Systems Product Security Incident Response Team <psirt () cisco com>
Date: Wed, 26 Mar 2014 12:07:45 -0400

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Cisco IOS Software Session Initiation Protocol Denial of Service Vulnerability

Advisory ID: cisco-sa-20140326-sip

Revision 1.0

For Public Release 2014 March 26 16:00  UTC (GMT)

Summary
=======

A vulnerability in the Session Initiation Protocol (SIP) implementation in Cisco IOS Software and Cisco IOS XE Software 
could allow an unauthenticated, remote attacker to cause a reload of an affected device. To exploit this vulnerability, 
affected devices must be configured to process SIP messages. Limited Cisco IOS Software and Cisco IOS XE Software 
releases are affected.

Cisco has released free software updates that address this vulnerability. 

There are no workarounds for devices that must run SIP; however, mitigations are available to limit exposure to this 
vulnerability.

This advisory is available at the following link:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20140326-sip

Note: The March 26, 2014, Cisco IOS Software Security Advisory bundled publication includes six Cisco Security 
Advisories. All advisories address vulnerabilities in Cisco IOS Software. Each Cisco IOS Software Security Advisory 
lists the Cisco IOS Software releases that correct the vulnerability or vulnerabilities detailed in the advisory as 
well as the Cisco IOS Software releases that correct all Cisco IOS Software vulnerabilities in the March 2014 bundled 
publication.

Individual publication links are in Cisco Event Response: Semiannual Cisco IOS Software Security Advisory Bundled 
Publication at the following link:

http://www.cisco.com/web/about/security/intelligence/Cisco_ERP_mar14.html
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